Burner for kilns.



Patented Aug. 4, `1914'.

4 SEBBTS-SHEET 2.

SHN/mm1 J. T. UNDERWODD.

BURNER FOR KILNS.

APPLICATION FILED NOV. 3, 1913.

ma@ Hac l uc "UKN/S PETERS VO. PHOTO-LITHO., WASHINGTON. D

J. 'I'. UNDERWOOD.

BURNER FOR KILNS.

vAPPLICATION rILBn Nov. a, 191s.

Patented Aug. 4, 1914.

4 SHEETS-SHEET 1.

J. T. UNDERWOOD.

BURNER FOR KILNS.

APPLIUATION rILBn Nov. a, ma.

l, 105,723.. Patented Aug. 4, 1914L 4 SHEETS-SHEET 3.

3 nuemloz Stimm' 'VUE NORRI lc IERS CD. IHOTUJ-ITHO. WASHINGTON, D4 C J.T. UNDERWOOD.

BURNER FOR KILNS. APPLIUATION'HLBD Nov.a,1a13.

Patented Aug. 4,4914.

4 SHEETS-SHEET 4.

5 n ue nto@ umh.: wooo.

m1 @Zwam/@ wi/bumsen www@ fm @Moule/s3 THIS. NURRIS PETERS (0PHU'IU-LITHO.. WASHINGTON. D l" NnNrrnn STATES ratificar1 orrion.

JOI-IN T. UNDERW0I),` `0F DETROIT, MICIFIIGMSIIIQ,` ASSIGNOR TOUNDEIRIWGODENGINEER- ING COMPANY, 0F DETROIT, MICHIGAN, A CORPORATION 0FMICHIGAN.

BURNER FOR KILNS.`

Specication of Letters Patent.

Patented Aug. 4;, 1914.

l This invention relates to burners `adapted I for usewith kilnsemployed for `theburnl ing of brick, terra cotta .and other earthenproducts; and its object is to provide a conl struction which can beaccuratelyand easl ily controlled; Which shall be reasonably` certainin1its operation; and which can be constructed at comparatively loWcosta` `This invention consists in combination with gas and air`mainspreferably parallel to each other, through which the fluids flowunder pressure, of a series of :gas conl duits or `passagesextendingparallelto each other beneath the iioor of the kiln, andprovided with valve seats in their upper sides, of a series of valveseach independently operable by one or` another of a system oftelescoping shafts, of a series of pipes extending from the airmain,parallel to the gas con-` duits, and having nozzles at their ends forthe discharge of air upwardly through open-` ings` in the floor of thekiln.` A

In the accompanying drawings Figures 1 `l3--B. Fig. `5 is. a plan of theoperating mechanism of the gas valves. Fig. 6 1s a detail of the same.Fig. 7 is a longitudinal section and Fig.` 8 a transverse section o f avalve and its connections. Fig. 9 is a view shovvingthe connection oftheair pipes to the air main.`

Similar reference characters `refer to like parts throughout the severalviews.

Inthe `burning of brick, terra cotta t1les andsimilar materials, it hasbeen found preferable `to employ producer gas because `of the ease ofcont-rol and the low cost.

The l present construction; combines means for regulating the flow ofthis producer gas also under` control,` so that the proper amount of airand of gas can be delivered at `any desired point.

In the drawings, 1 represents a main or tunnel through which the gas maybe forced under pressure, and` 2 and 3 are `the mains for the air, also,under pressure. These air mains and the gas tunnel will preferablyextend parallel to the front and rear sides of the kiln. Extending:transversely of the kiln from the tunnel lare a series of conduits tfor `the gas, preferably constructed of lengths of terra cotta pipeandin part formed with openings 5` as shown `in Figs. 7 and S; Resting oncircular flanges formed on the proper sectionsofthis conduit are iron.plates `6 having cylindrical flanges 7 in which the mushroom valves 8may-fit. Extending` upwardly above these flanged plates are the valvechambers `9. It has been found desirable to have theopenings 11 Wherethe gas may be burned and therefore, the valve chambers 9, nearer`together 10 of the kiln `and contain the operating mechanism .for`these mushroom valves 8; This mechanism consists of a series of`telescoping shafts, the inside shaft 14 being preferably solid and theother shafts 15, 16, 17 and 18 being` of ordinary pipe. Mounted in theWall 19 of the chamber 13, as shown in Fig. 3,and in the adjacent Wall20 of the first valve chamber 9, is a pipe 22 through which the shaft 18extends. On the outer ends of the shafts are the toothed Wheels 23 (seeFigs. 5 and 6), preferably all of the same diameter, With which thepawls 24 engage, which paWls are carried by the shaft 25. The hubs 21 ofthe Wheels 23 may have holes 26 into which` the end of a bar` may beinserted, sothat the shafts may be turned as desired, and heldin suchposition has its `inner end yournaled inthe thimble 105 28, mounted in.the vvall 29. As pipe :30 of sition, a series of pipes, one for eachvalve` chamber, extending from the air main into said valve chambers, anupwardly directed nozzleat the end of each pipe Within the valve chamber`toi discharge air lthrough the opening in the top of the valve;chamber, and means to control the flow of air.

5. The combination of a gas main, a conduit extending therefrom underthe Hoor of a kiln and consisting of lengths of terra cotta pipes, aportion of said lengths having openings in their upper sides, valvechambers extending from the conduit to the surface of the `Hoor andhavingopenings `to permit gas to flow into the kiln, a series of shaftsextending through the Walls ofthe valve chambers,one for each opening inthe conduit, a valve for eachopening, a fiexible connector for eachshaft and valve, and means to turn each shaft independently of theothers so that the `valve connected thereto may be raised.` y

6. The combination of a gas main, a conduit extending therefrom underthe floor of a kiln and consisting of lengths of terra cotta pipes, aportion of said lengths having openings in their upper sides, valvechambers extending from the conduit to the surface of the `floor andhaving `openings to permit gas to flow into the kiln, a series of shaftsextending through the Walls of the valve chambers,one `for each opening`in the conduit, a valve for each openingqa iielxible connector for eachshaft and valve, and means to turn each` shaft independently of theothers so that the valve connected thereto maybe raised, said meansconsisting of a ratchet Wheel having holes in its hub to receive a levervvhereby` the shaft may be turned and a pavvl to prevent the seating ofthe valve until it is released. i

7. The combination of a gas main, a con- Copies of this patent may fueobtained for duit extending therefrom under the floor of a kiln andconsisting of terracotta tubes having openings at intervals in the top,a valve chamber for each `openingextending from the conduit to thesurface of the floor and having an opening to permit gas to flow intothe kiln, a series of telescoping `shafts extending through the `Wallsof the valve chambers, one for each chamber, a valve for each opening,shaft andvalve, and means to turneach shaft independently of the othersso that the valve connected thereto may be raised.

8. The combination of` a gas conduit havingan opening therein, a valveseat mounted on the conduit around the opening, a valve for the seat, avalve chamber surrounding the valve and having an opening therein, meansto operate the valve, and an air pipe extending into the valve chamberand having a nozzle directed to discharge air through the opening in1thevalve chamber, and means to control the flow of air.

9. The combination of a gas conduit havingr a plurality of openingstherein, a plurality of valve seats mounted on the conduit one aroundeach opening, avalve for eachseat, a valve chamber surrounding eachvalve and having an opening therein, means to operate the valves, an airpipe extending into each valve chamber and having a nozzle directed fordischarging air through the opening of the valve chamber, and means tocontrol the flow of air. l

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

JOHN T. UNDERWOOD.

Witnesses EDWARD N. PAGELSEN, HUGO W. KREINBRING.

Washington, D. C.

a flexible connector for each

